function disimpostaClasseAttivaReg() {

    var objs = document.getElementById('labelreg').getElementsByTagName('a');
    if (objs) {

        var css_classes;

        for (var i=0; i<objs.length; i++) {

            css_classes = objs[i].className.split(' ');

            for (var c=0; c<css_classes.length; c++) {
                if (css_classes[c]=='current') {
                    objs[i].className = css_classes.slice(c,c).join(' ');
                    return;
                }
            }
        }
    }
}

function nascondiBoxReg() {


    var objs = document.getElementById('wrapperreg').getElementsByTagName('div');

    if (objs) {

         for (var i=0; i<objs.length; i++) if (objs[i].className=='box-reg') objs[i].style.zIndex = '1';

        disimpostaClasseAttivaReg();
    }
}


function posizionaBoxReg() {

    var objs = document.getElementById('wrapperreg').getElementsByTagName('div');
    if (objs) {

        for (var i=0; i<objs.length; i++) if (objs[i].className=='box-reg') objs[i].style.position = 'absolute';

        nascondiBoxReg();

        objs[0].style.zIndex = '10';

        document.getElementById('label-reg-1').className += (document.getElementById('label-reg-1').className=='')? 'current' : ' current';
    }
}

function attivaBoxReg() {

    var objs = document.getElementById('labelreg').getElementsByTagName('a');
    if (objs) {

        for (var i=0; i<objs.length; i++) {

            objs[i].onclick = function() {

                var numbox = this.id.substring(10,this.id.length);

                nascondiBoxReg();

                document.getElementById('box-reg-' + numbox).style.zIndex = '10';

                this.className += (this.className=='')? 'current' : ' current';

                return false;
            }
        }
    }
}

function impostaBoxWrapperReg() {

	document.getElementById('wrapperreg').style.height = '140px';
	
	}
	
window.onload = function() {
	impostaBoxWrapperReg();
	attivaBoxReg(); 
    posizionaBoxReg();
}